Lock



K. HORIGUCHI.

Feb. 13, 1923,

LOCK. FILED .IULY 9,1921- 2 SHEETS-SHEET l- K. HORIGUCHI.

Feb, 1 1923;

LOCK.

FILED JULY 9,1921- 2 SHEETS-SHEET 2,

czi

Patented Feb. .13, 1923..

lsttld tidti iirrrrano rronreuenr, orronyo, JAPAN.

Lock.

Application filed July 9, 192 1fSeria1 No. 483,565.

To all whom z'tkmay concern: i i. 1 ,Be 1t known that I, KINTAno Homeooi-n,

a subject of the Emperor of .Japam residingyatNo. 6G Ichome, Yushima-teujincho, .llongoku, Tokyo dapan, have invented cer stain new and useful Improvements in Locks,

OfWhiCh the following is a; specification.

This invention relates to an improvement i in locks and especially of the kind in which a magnetic key is used to-open the lock. The invention has for lits objects to obtain the greatest number of'locks of different combination with simpler construction and simultaneously to' prevent theunlocking With a Italse key. i

The accompanying drawingsshow one example of the lock according (to this invention, in which: a Fig. 1 is a sectional view the parts are in closed position.

i Fig. 2 is a similar View withthe parts in unlocked condition:

i Fig. 3 is a sectional view taken. in line .IH.-.III of the Figure 1. i i

Fig. 4 shows plan view of three locking discs A, B and C, tlielock bein'gfshown as a kind of registering or combination.

Fig. 5 is a frontor face View of the lock.

In the drawings, 1 is a member such as a of the look when.

book case or pillar of airoomto which the cooperating member 2 such as a cover'o'f the i case or. door of the room: is to be locked. 3

is apin fitted to the member 2. 4 isamovable member tobe slidable in the space 1 provided in member 1. This member 4 has aflslot 4- into which the pin 3 of the member 2 projects. In the closed position of the lock, the side cut 3: in the pin 3 engages with one side of the slot at ofthe member 4t as shownin Fig. 3. Whenthe lock is unlocked and the parts are brought to the positions shown in Fig. 2, this member t may be slid by means of a projecting handle 4?. Thus the pin 3 is then disengaged with the slot 4 of the member 4 and the two bodies 1 and 2- canbe opened as usual.

6 is a hole in the member 1, into which the locking rod5 is introduced. 7 is a lock case,

8 is a central shaft of the lock passing throughthe case. 9 is a head of the shaft,

10 is a rotatable disc having in its surface marks of several letters. A, B and C are looking dlscs such .asused for ordlnary registering lock and can be rotated inside the case 7. These discs are respectively prointo which iron pieces vided with projections 11, 11 and 11 in their circular grooves 15, 15 and 15"as shown. The inner disc A. isrigidly fitted to the shaft 8 and therefore can be rotated byrotating the shaft 8 through the head 9.

arena entrie The middle disc B is loosely mounted on the shai't Sand can be rotated only when the 1 pro ection 11 engages withthe projection 11 of the disc A. The outer disc C is also loosely mounted on the shaft 8 andcan be rotated only when the projection 11 engages with the projection 11"o;ttl 1e disc 18.

Briefly, these looking discs are operated in conjunction with the letters inscribed. on

the surface of the rotatable disk 10, so as to bring the parts having the same configuration, shown by letters a, b, c of respective disks into alignment. The parts a, b, c are iron pieces which have the same cross pieces as the locking rod 5, and. nested in the corresponding holes provided in the respective discs. Moreover, the discs have respectively may be exregisterihg lock by a suitable combination of locking discs according to ordinal manner of combination in the known registering lock. Then, when one wishes to open thelock, now. locked, one firstly brings theiron pieces a, t, c, in alignment according to the ordinal registering principle of the lock of the kind.

Then one uses the key 18, inserts it in hole 1 14 on the disc 10, and attract-sthe pieces a, b, c, and rod 5 by the magnetic force of the key 13, and draw out the parts from the position in Fig. 1 tothat in Fig. 2 as shown. Therefore the member can now be freely slid to disengage the cut t from. the cut 3 of the locking pin 3. Whenone wishes to close the lock after bringing the pin 3 and member 4 into engagement, one uses the key 12 and pushes Z), c, and rod 5. In such operation, the rod 5 will freely move. in and out of? the holes in the pieces a,

for iron pieces a, b, and c of the discs A, B or 0, since said rod is of the same cross sectional shape as said holes.

From the foregoing it will be understood that when the disks A, B, Cand 10 are not in correct register, or when'these parts are in register and a false key of non magnetic material, which coincides with the shape of the parts a, Z) and c is used,'ithe unlocking of the lock is entirely prevented. Moreover, as the lockingand unlocking-method of the improved lock consistsiin'a mere linear displacement of the locking pieces, the lock 'is of simpler constructionthan those loc {S Jhavingirotatable parts. Further, the key 'hole .of the improved lock is substantially filled with the locking pieces and-this will zprevent the insertion of a wire or-the like for the purpose of picking the lock.

Briefly, the improved =look can be very easily operated by' an authorized person possessing'the proper keys 'but cannot be operated l by; an unauthorized: person.

Moreover, by suitable choice of the numberaof the locking discs, shapes ofzthe iron pieces, lockingrrod 11 or of the hole 14, numberuand shapes of theiauxiliary pieces of a, Z2, 0, d, e, etc.,.and especiallythe strength of m'a'gneticforce in the key 18,. apractically unlimited combinationot them canbe obtained to constitute a great :many locks of different .type with comparatively simple construction. All these merits-are due :to the employment .otra magnetic key together with the ordinary key for respectively unlocking and locking the instrument.

, .I-rlaim- :1. iln combination with a lock'having a movable non magnetic locking bolt, of a magnetic key for withdrawing said bolt, and a nonmagnetic key lorlocking said bolt.

2. The combination with a lockhavinp a plurality of rotatable members provided with slidably lockingpieces, and a locking bolt movable with said' locking pieces, of a :magnetic key for. moving-said locking pieces and bolt.

In combination, a lock provided with a plurality ofrotatable-members, each rotatable member havingra series of? apertures 'ture.

in all the rotatable members are in alignment, a locking bolt adapted to move with vsaid locking pieces, and a magnetic key for movimg said locking pieces and said bolt simultaneously.

4. In combination, a lock provided with a series of coaxially arranged rotatable disks, means for rotating said disks, each disk beingprovided with a series of apertures of:

different shapes, locking pieces arranged in "said apertures-and adapted to'move axially when the apertures of the samev shape in the disksare in alignment, a locking bolt movable with said locking pieces :and adapted to move into one of said apertures when the locking pieces are in movable position, and a magnetic key for simultaneously actuating said locking pieces and said bolt.

5. In combination, a lock provided with a rotatable shaft, a'disk fixed to said, shaft, other disks loosely mounted on said shaft,

-means for causing the last mentioned disks to move with the first mentioned disk during a port-ion of a revolution of the first :mentioned disk, a casing enclosing said disks,

a series of apertures of different shapes arranged in each disk, a dial disk fixed to said shaft and arranged exteriorly of said casing, locking pieces arranged in the apertures of the disks and movable axially when the apertures of the same shape in the first mentioned disks are arranged in alignment, a locking 'bolt movable with said locking pieces, and'a magnetic key for simultaneously -moving a plurality of said locking pieces and. said bolt for the purpose of withdrawing the latter.

6. A combination as claimed in claim 5 in which the locking pieces are of non magnetic material, and a non magnetic piccczfor moving said locking pieces in the direction op posite that in which they are moved by the magnetic key.

In testimony whereof he ailixes his signa- KINTARO 'HORIGUCHT. 1,. a 

